I think my worst mistake is try to become a day trader. I have many winning trading, but for 1-2 fail trade with over leverage, all my funds gone. It's really hard to comeback from that mistake and i have been stressful many days. 
Majority that do end up on doing leverage specially on higher number will surely be wrecked in the end of the line.Lots are just really too impatient on making big profits and thats why they do end up with this option without realizing on the risk involved with leverage trading until they do realized thatits already too late. Due to greed and other common reasons then mistakes like this are really that not rare. When it comes to mistake counts
then i do have lots and i wont really be mentioning it 1 by 1. Thing here is that you do learn up into those mistakes which would really make you as a
better investor.